*{
    margin: 0;
    padding: 0;
    border: 0;
}
.zc{
    height: 725px;
    width: 100%;
    overflow: hidden;
}
.zc1{
    height: 50%;
    width: 60%;
    margin-top: 120px;
    background-color: gray;
    border-radius: 18px;
    margin:  0 auto;
    overflow: hidden;
}